<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <father></father>
    </div>
    <script src="./node_modules/vue/dist/vue.js"></script>
    <script>
        let son = {
            template: '<div>son</div>'
        }

        let father = {
            template: "<div>father<son></son></div>",
            components: {
                son
            }
        }

        

        const app = new Vue({
            el: "#app",
            data() {
                return {}
            },
            components: {
                father
            }
        })
    </script>
</body>
</html>